Middle-School (grades 5 through 9) math program written to provide skills in context. Students must place four quarters, four dimes, four nickels, and four pennies on a 4 by 4 grid so that the rows and columns sum to given values.

EngCalc is a new calculating software with extended capabilities. It is recommended for use by math, physics and engineering student and teacher. The main advantage of the software is a simple input format even for the most complicated formulas.

SimplexCalc is a multivariable desktop calculator for Windows. It is small and simple to use but with much power and versatility underneath. It can be used as an enhanced elementary, scientific, financial or expression calculator.

AcaStat statistical software is an inexpensive and easy-to-use data analysis tool. Whether a teacher, student, manager, or researcher you will find AcaStat is a simple solution for your basic analytical needs. Mac and Windows.

DDCM Due Date Calculator gives you the ability to easily calculate the due date of your expectant child. Simply enter some basic details and DDCM will tell you the due date, date of conception and how long you have been pregnant.